How Search Works
Last Friday (1st March) Google released a new live infographic called “How Search Works”. The infographic reveals some of the factors that go into how their search engine works, from crawling & indexing to their algorithms and spam fighting.
Alongside the infographic is a small video by Matt Cutts, the head of webspam at Google which also informs on how a search works.
But maybe a little more interesting is their page about their battle to fight spam, which includes a live spam updates that shows examples and screenshot of recently removed websites from their search engine. It also goes into detail on the types of things Google considers spam such as, cloaking and/or sneaky redirects, hidden text, keyword stuffing, unnatural links to a site and thin content with no value.